| Abbreviation | Definition |
|---|---|
| CCO | XBTX BTX Graphics file |
| CCRF | Bitmap graphics (Calcomp Raster File) (B&W or 1bit CMYK for printers) |
| CCT | Shockwave cast (Macromedia Director) |
| CD | Compact Disk description |
| CDA | CD audio track |
| CDB | Card database ( CardScan) |
| CDB | Turbo C Utilities main DataBase |
| CDF | Channel Definition Format ( Microsoft) |
| CDF | Common Data Format |
| CDF | Computable Document Format |
| CDF | Cyberspace Description Format |
| CDF | Unidata NetCDF Graphics |
| CDI | Compact Disk Interactive (Phillips CD-I IFF file) |
| CDK | Document (Atari Calamus) |
| CDL | CADKey CAD language file |
| CDM | Disk Drivers NPA (Novell NetWare) |
| CDM | Music format (compressed) |
| CDR | CorelDraw format Vector graphics |
| CD-ROM | compact disc read-only memory |
| CDT | CorelDraw Template file |